Devils have built-in weaknesses in the various spells and weapons that are extra-effective against them. Angels are vulnerable to everything that affects magic beings, though, but devils don't generally have those themselves.
Angels are generally sacred, though, so if you are really "holy enough"
, you may be able to make up the difference. It seems thematic that pretender gods with weak bless effects would have a harder time using angels to full effect. Similarly, perhaps during an ascenscion war, demons do tend to have the upper hand in some ways. Once someone is a real god, perhaps their bless bonus lets angels or whatever minion they choose take care of things like demons. In other words, I'm not sure that we'd necessarily expect angels to be as dangerous as the better demons. Seems more like a thematic question that could be answered either way. I'd be interested to hear what Illwinter might have to say about why they chose the values they did.
Seems though like one thing the Angels could really use which would be thematic, would be a
defense that only worked against demons.
PvK